简介:ThispaperpresentsapropersplittingiterativemethodforcomparingthegeneralrestrictedlineareuqationsAx=b,x∈T(where,b∈AT,andTisanarbitrarybutfixedsubspaceofCm)andthegeneralizedinAT,SForthespecialcasewhenb∈ATanddim(T)=dim(AT),thissplittingiterativemethverseAT,ShodconvergestoAT,Sb(theuniquesolutionofthegeneralrestrictedsystemAx=bx∈T).
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简介:QuantumdynamicscalculationsforthetitlereactionH(2S)+S2(X3-Σg)→SH(X2Π)+S(3P)areperformedbyusingagloballyaccuratedoublemany-bodyexpansionpotentialenergysurface[J.Phys.Chem.A1155274(2011)].TheChebyshevrealwavepacketpropagationmethodisemployedtoobtainthedynamicalinformation,suchasreactionprobability,initialstate-specifiedintegralcrosssection,andthermalrateconstant.Itisfoundnotonlythatthereisareactionthresholdnear0.7eVinbothreactionprobabilitiesandintegralcrosssectioncurves,butalsothatboththeprobabilityandcrosssectionincreasefirstlyandthendecreaseasthecollisionenergyincreases.Theexistenceoftheresonancestructureinboththeprobabilityandcrosssectioncurvesisascribedtothedeeppotentialwell.Thecalculationoftherateconstantrevealsthatthereactionoccurringonthepotentialenergysurfaceoftheground-stateHS2isslowtotakeplace.
简介:介绍了用于上海天文台佘山25m射电望远镜VLBI观测站S2-PT终端的S2FS(S2FieldSystem)控制软件。该软件在甚长基线干涉测量(VLBI)实验中,能实现S2终端系统记录观测数据自动化。
简介:摘要目的研究布鲁杆菌S2株诱导BV-2小胶质细胞凋亡的机制,以发现神经型布鲁杆菌病药物治疗的新靶点。方法用布鲁杆菌S2株分别侵染BV-2小胶质细胞0、3、6、12、24 h,Western blot和RT-qPCR技术检测p-JNK、p53蛋白和mRNA表达水平,流式细胞术检测细胞凋亡,细胞免疫荧光技术检测p-JNK蛋白核转运。结果布鲁杆菌S2株能促进BV-2小胶质细胞p-JNK、p53蛋白及mRNA表达,并增加p-JNK蛋白核转运。布鲁杆菌S2株能诱导BV-2小胶质细胞凋亡。结论布鲁杆菌S2株通过激活BV-2小胶质细胞JNK,促进p53表达,诱导细胞凋亡。